Really funny, its likely him trying to get them scratches in. It’s likely a fairly harmless thing but I would be a bit hesitant to let that behavior slide, if repeated it could lead to some obsessive behavior. Especially if the dog is doing it out of boredom and needs stimulation.

Idk, whenever I enjoy a video like this, invariably someone comes into the thread to inform me that the animal in question is suffering from some awful, incurable ailment that is causing the humorous behavior. So… lol?